Cleaning dark laminated stock: G33/40

On my 1942 G33/40, the stock has seen some use to be blunt. The stock is pretty dark I believe from oil over the years. I tested a couple of small areas with a spot of oil soap on a damp towel, but nothing really came off. Question, just leave as is, or is there something I can do that will slightly lighten it by removing some of the oil. I have heard of oven cleaner and the like, but I do not even want to think of using something like that. It is not a matching gun as far as the bolt (is G33/40 though) goes, but stock and receiver do match if that will affect what I may do. If the best course is to leave it alone, I will.

I vote leave it alone. There's more to lose than to be gained.

Pisgah is absolutely correct, leave it alone. It will not look any better if you mess with it.

Yes, I figured that leaving it alone would be the best course of action. You cannot replace "patina" for lack of a better word, and it is easier to screw things up alot of the time. On a side note, my 13 year old shot it for the first time yesterday. He kept talking about how much he liked it while handling it, but after 5 rounds he said, " I dont like this rifle". He prefers his M1 carbine for now. He did like the K98s and Swiss K31s though!

What has been said by Pisgah and Reich1900. I can't see any positive in cleaning these things.

I cleaned the bore only, and put it safely away until the next time out at the range.